/* Authentication shell shared by register and password-management pages. */
:root {
    --auth-primary: var(--brand-action, #e96745);
    --auth-primary-hover: var(--brand-action-hover, #dc5b39);
    --auth-primary-foreground: var(--brand-action-foreground, #ffffff);
    --auth-primary-ink: var(--brand-action-ink, #a63b26);
    --auth-primary-soft: #fff1eb;
    --auth-canvas: #fff9f5;
    --auth-surface: #ffffff;
    --auth-soft: #faf9f7;
    --auth-text: #1a1a1a;
    --auth-secondary: #374151;
    --auth-muted: #6b7280;
    --auth-line: #dee2e6;
    --auth-line-strong: #c9cfd6;
    --auth-error: #963b27;
}

body {
    background: var(--auth-canvas);
    color: var(--auth-text);
}

.auth-container {
    min-height: calc(100vh - 72px);
    padding: 44px 16px 64px;
    background: var(--auth-canvas);
    color: var(--auth-text);
    color-scheme: light;
    font-family: var(--font-family-base, "Noto Sans Thai", system-ui, sans-serif);
}

.auth-container .container {
    width: min(100%, 520px);
    max-width: 520px;
    margin: 0 auto;
    padding: 0;
}

.auth-card {
    overflow: hidden;
    width: 100%;
    border: 1px solid var(--auth-line-strong);
    border-radius: 8px;
    background: var(--auth-surface);
    box-shadow: none;
}

.auth-card--compact { max-width: 440px; margin: 0 auto; }

.auth-header {
    padding: 26px 28px 21px;
    border-bottom: 1px solid var(--auth-line);
    background: var(--auth-surface);
    text-align: left;
}

.auth-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 21px;
    color: var(--auth-muted);
    font-size: .76rem;
    font-weight: 650;
    text-decoration: none;
}

.auth-back:hover { color: var(--auth-primary-ink); }

.auth-eyebrow {
    display: block;
    margin-bottom: 7px;
    color: var(--auth-primary-ink);
    font-size: .7rem;
    font-weight: 760;
    letter-spacing: .09em;
    text-transform: uppercase;
}

.auth-header h1 {
    margin: 0 0 7px;
    color: var(--auth-text);
    font-size: clamp(1.5rem, 4vw, 1.74rem);
    font-weight: 760;
    letter-spacing: -.025em;
    line-height: 1.22;
}

.auth-header p {
    margin: 0;
    color: var(--auth-muted);
    font-size: .83rem;
    line-height: 1.65;
}

.auth-body { padding: 24px 28px 27px; }

.auth-alert,
.auth-form-error {
    margin: 0 0 16px;
    padding: 10px 12px;
    border: 1px solid var(--auth-line);
    border-radius: 4px;
    background: var(--auth-soft);
    color: var(--auth-secondary);
    font-size: .78rem;
    line-height: 1.5;
}

.auth-alert-danger,
.auth-form-error {
    border-color: #f1b8a8;
    background: var(--auth-primary-soft);
    color: var(--auth-error);
}

.auth-form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.auth-form-group { margin-bottom: 16px; }

.auth-form-label {
    display: block;
    margin-bottom: 7px;
    color: var(--auth-text);
    font-size: .8rem;
    font-weight: 720;
}

.auth-form-control {
    display: block;
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--auth-line-strong);
    border-radius: 4px;
    background: var(--auth-surface);
    color: var(--auth-text);
    font: inherit;
    font-size: .86rem;
    box-shadow: none;
}

.auth-form-control::placeholder { color: #6b7280; }
.auth-form-control:hover { border-color: #aeb5bd; }

.auth-form-control:focus {
    border-color: var(--auth-primary);
    outline: 2px solid rgba(255, 122, 89, .16);
    outline-offset: 0;
    box-shadow: none;
}

.auth-form-control.error,
.auth-form-control[aria-invalid="true"] { border-color: var(--auth-primary); }

.auth-password-wrapper { position: relative; }
.auth-password-wrapper .auth-form-control { padding-right: 46px; }

.auth-password-toggle {
    position: absolute;
    top: 50%;
    right: 7px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--auth-muted);
    cursor: pointer;
    transform: translateY(-50%);
}

.auth-password-toggle:hover {
    background: var(--auth-soft);
    color: var(--auth-primary-ink);
}

.auth-help-text,
.auth-error {
    display: block;
    margin: 6px 0 0;
    color: var(--auth-muted);
    font-size: .73rem;
    line-height: 1.5;
}

.auth-help-text.success { color: var(--auth-secondary); }
.auth-error { color: var(--auth-error); }

.auth-checkbox-group { margin: 4px 0 18px; }

.auth-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 9px;
}

.auth-checkbox-input {
    width: 17px;
    height: 17px;
    margin: 3px 0 0;
    accent-color: var(--auth-primary);
    flex: 0 0 auto;
}

.auth-checkbox-label {
    color: var(--auth-muted);
    font-size: .75rem;
    line-height: 1.55;
}

.auth-checkbox-label a,
.auth-footer a {
    color: var(--auth-primary-ink);
    font-weight: 700;
    text-decoration: none;
}

.auth-checkbox-label a:hover,
.auth-footer a:hover { color: var(--auth-text); }

.password-requirements,
.security-tips {
    margin-top: 9px;
    padding: 11px 12px;
    border-left: 3px solid var(--auth-primary);
    background: var(--auth-soft);
    color: var(--auth-muted);
    font-size: .73rem;
    line-height: 1.55;
}

.security-tips { margin: 0 0 18px; }
.password-requirements strong,
.security-tips strong,
.security-tips h2 { color: var(--auth-secondary); }
.password-requirements ul,
.security-tips ul { margin: 6px 0 0; padding-left: 18px; }
.security-tips h2 { margin: 0 0 6px; font-size: .8rem; }

.auth-button,
.auth-button-secondary,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    min-height: 44px;
    padding: 9px 14px;
    border: 1px solid var(--auth-primary);
    border-radius: 4px;
    background: var(--auth-primary);
    color: var(--auth-primary-foreground);
    font: inherit;
    font-size: .84rem;
    font-weight: 750;
    text-decoration: none;
    box-shadow: none;
    cursor: pointer;
}

.auth-button:hover:not(:disabled) {
    border-color: var(--auth-primary-hover);
    background: var(--auth-primary-hover);
    color: var(--auth-primary-foreground);
}

.auth-button:disabled {
    border-color: var(--auth-line-strong);
    background: var(--auth-soft);
    color: var(--auth-muted);
    cursor: not-allowed;
}

.auth-button-secondary,
.secondary-button {
    margin-top: 10px;
    border-color: var(--auth-line-strong);
    background: var(--auth-surface);
    color: var(--auth-secondary);
}

.auth-button-secondary:hover,
.secondary-button:hover {
    border-color: #aeb5bd;
    background: var(--auth-soft);
    color: var(--auth-text);
}

.auth-footer {
    margin-top: 20px;
    padding-top: 17px;
    border-top: 1px solid var(--auth-line);
    color: var(--auth-muted);
    font-size: .78rem;
    line-height: 1.7;
    text-align: center;
}

.auth-footer p { margin: 0; }
.auth-footer p + p { margin-top: 3px; }

.auth-container a:focus-visible,
.auth-container button:focus-visible,
.auth-container input:focus-visible {
    outline: 2px solid var(--auth-primary);
    outline-offset: 3px;
}

.auth-spin { animation: auth-spin .8s linear infinite; }
@keyframes auth-spin { to { transform: rotate(360deg); } }

/* Keep browser autofill within the light design system. */
.auth-form-control:-webkit-autofill,
.auth-form-control:-webkit-autofill:hover,
.auth-form-control:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px #ffffff inset !important;
    -webkit-text-fill-color: var(--auth-text) !important;
}

@media (max-width: 560px) {
    .auth-container {
        min-height: auto;
        padding: 24px 12px 48px;
    }
    .auth-header { padding: 22px 18px 18px; }
    .auth-body { padding: 20px 18px 22px; }
    .auth-form-row { grid-template-columns: 1fr; gap: 0; }
}

@media (prefers-reduced-motion: reduce) {
    .auth-spin { animation: none; }
}